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2018 Countryman Crank No Start - What to Check Before Towing?

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Mike T. · rep 0 · May 25, 4:55 AM · 1 replies · solved · Question

Vehicle: 2018 Mini Cooper Countryman All4

My 2018 Mini Cooper Countryman All4 won't start this morning. It cranks strongly, so I don't think it's the battery, but the engine just won't catch. There are no warning lights on the dash, which is confusing.

I tried cycling the ignition a few times and even tried holding the start button longer, but no luck. It was running fine yesterday. I'm trying to figure out if there's anything simple I can check myself before having to call for a tow.

Could it be a fuel issue, or maybe something electrical that isn't throwing a code? Any tips for diagnosing a crank-no-start situation on these cars?

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 25, 4:55 AM

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ClearTheCode admin answer:

A crank-no-start condition on your 2018 Mini Cooper Countryman All4, especially without immediate warning lights, points to a fundamental issue with either fuel, spark, or air. Since it cranks strongly, we can likely rule out a completely dead battery or starter motor.

Here's a systematic approach to diagnose:

  1. Check for Fuel Delivery:

    • Listen for the Fuel Pump: When you turn the ignition to the 'ON' position (without starting), listen carefully for a faint humming sound from the rear of the car for a couple of seconds. This indicates the fuel pump is priming. If you hear nothing, the pump might be faulty, or its fuse/relay could be bad.
    • Fuel Pump Fuse/Relay: Locate your fuse box (check your owner's manual) and inspect the fuse for the fuel pump. Also, consider swapping the fuel pump relay with a known good, similar relay (e.g., horn relay) to test it.

  2. Check for Spark:

    • This is harder to check without tools, but if you have a spare spark plug or an inline spark tester, you can pull one ignition coil and test for spark. Exercise caution when working with ignition systems.
    • A common failure point can be the Crankshaft Position Sensor (CPS) or Camshaft Position Sensor (CMP). If these fail, the ECU doesn't know when to fire the spark or inject fuel, leading to a no-start. These can sometimes fail without throwing a code immediately.

  3. Check for Air (Intake Obstruction):

    • While less common for a sudden no-start, ensure the air intake isn't completely blocked (e.g., by debris or a collapsed air filter). This is usually a long shot but worth a quick visual check.

When to See a Shop:

If you've checked the fuel pump sound, fuse, and relay, and still have no success, or if you suspect a sensor issue (like the CPS/CMP), it's best to have your Mini towed to a professional shop. They can perform fuel pressure tests, check for injector pulse, and use diagnostic software to read live data from sensors, which will quickly pinpoint the exact cause of the no-start.

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